长江禁渔5年，中华鲟入海率提升约20倍

Core Insights - The implementation of a fishing ban in the Yangtze River has significantly increased the marine entry rate of the Chinese sturgeon, a flagship species, by approximately 20 times over the past five years [1] Group 1: Monitoring and Research - The Nanjing Institute of Geography and Lake Research has monitored the release of 54 Chinese sturgeons in the Jiangsu section of the Yangtze River, leading the region in capture numbers outside of Hubei [1] - Starting in 2024, the Nanjing Institute will lead systematic monitoring of the Chinese sturgeon in the Jiangsu section, collaborating with the Jiangsu Freshwater Fisheries Research Institute to track migration patterns and health status [2] - Monitoring data indicates that sturgeons take an average of 49 days to migrate from release points to the Jiangsu section, with an average speed of 29.5 kilometers per day [2] Group 2: Conservation Efforts - The Chinese sturgeon, known for its long maturation period of 18 years, has not been observed to reproduce naturally since 2017, making population recovery challenging [3] - The increase in marine entry rates and the significant capture numbers in the Jiangsu section provide crucial scientific support for optimizing the timing, location, and composition of sturgeon releases to aid in population recovery [3]